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Samantha Ronson and CoverGirl ... not two words you'd typically see in the same sentence, however SamRo attended the cosmetic company's 50th Anniversary celebration at BOA Steakhouse in West Hollywood.

Dressed for the occasion in jeans, a beanie, black Converse sneakers and wearing no CoverGirl products, our favorite DJ kept a low profile while spinning for party-goers including CoverGirl Ellen DeGeneres and wife Portia de Rossi, Drew Barrymore, Sofia Vergara, Kendra Wilkinson ... and the face of CG's NatureLuxe line, 21-year-old country cutie Taylor Swift.

Too bad SamRo's gal pal and next door neighbor Lindsay Lohan didn't go along for the ride. Would've been the perfect place for the two former lovebirds to kiss and make-up!

On her way out of BOA, Samantha buys a rose ... and is asked if it's for Lindsay! Listen to her witty response below. Loves it!